H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/53
H04N 9/00 (2006.01) G01K 7/04 (2006.01) H04N 9/76 (2006.01)
Patent
CA 1105132
VIDEO EFFECTS GENERATOR Abstract of the Disclosure A special effects generator for use in video switching whereby a three dimensional shadow effect is produced by utilizing luminance information separately derived from RGB color inputs and providing a separate multiplier to control the shadow density. The generator functions by controllably blanking a portion of one video signal and then replacing such portion by another video signal and switching the displayed video linearly, said switching being controlled by color differences in one of the video signals, and providing luminance information derived from one video signal as a control signal for application to the other video signal so as to reduce the level thereof.
269501
Rayner Bruce L.
Taylor Gerald G.
Grass Valley Group Inc. (the)
Kirby Eades Gale Baker
LandOfFree
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